Utica Boilers H2OBT Operation and Installation Manual
MODELS
H2OBT402
H
OBT40112
2
H
OBT40114
2
H
OBT402WC
2
H
OBT40112WC
2
H
OBT40114WC
2
H
OBT602
2
H
OBT60112
2
H
OBT60114
2
H
OBT602WC
2
H
OBT60112WC
2
H
OBT60114WC
2
H
OBT802
2
H
OBT80112
2
H
OBT80114
2
H
OBT802WC
2
H
OBT80112WC
2
H
OBT80114WC
2
H
OBT1152
2
H
OBT115112
2
H
0BT115114
2
H
OBT1152WC
2
H
OBT115112WC
2
H
OBT115114WC
2
H2O
Hydronic Buffer Tanks
INST ALLATION, OPERATION &
MAINTENANCE MANUAL
40, 60, 80, 115 Gallon
2 = 2 inch NPT Pipe Connections
112 = 1½ inch NPT Pipe Connections
114 = 1¼ inch NPT Pipe Connections
WC = With Coil
An ISO 9001-2008 Certified Company
Conforms to UL STD 174
Certifi ed to CAN/CSA STD C22.2 No. 110-94
Information and specifi cations outlined in this manual in effect at the time of
printing of this manual. ECR International reserves the right to discontinue, change
specifi cations or system design at any time without notice and without incurring
ECRInternational,Inc.
2201 Dwyer Avenue, Utica NY 13501
web site: www.ecrinternational.com
any obligation, whatsoever.
P/N# 615000057, Rev. B [08/2012]
Table of Contents
I. General Information & Safety Instructions ...................................................................2
II. Important Safety Instructions .................................................................................... 3
III. Application .............................................................................................................. 3
I. General Information
IMPORTANT INFORMATION – READ CAREFULLY
NOTE: The equipment shall be installed in accordance with those installation regulations required in the area where the
installation is to be made. These regulations shall be carefully followed in all cases. Authorities having jurisdiction shall be
consulted before installations are made.
All wiring on water heaters shall be in accordance with the National Electrical Code and/or local regulations.
Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury, or loss
of life. Read and understand the entire manual before attempting installation, start-up, operation, or service. Installation
and service must be performed only by an experienced, skilled installer or service agency.
This water heater contains very hot water under high pressure. Do not unscrew any pipe ttings or attempt to disconnect
any components of this water heater without positively assuring that the water is cool and has no pressure. Always wear
protective clothing and equipment when installing, starting up or servicing this water heater to prevent scalding injuries.
Do not rely on the pressure and temperature gauges to determine the temperature and pressure of the water heater.
This water heater contains components that become very hot when the boiler is operating. Do not touch any components
unless they are cool.
Failure to follow all instructions in the proper order can cause personal injury or death. Read all instructions, including all
those contained in component manufacturers’ manuals before installing, starting up, operating, maintaining, or servicing
the water heater.
To reduce the risk of excessive pressures and temperatures in this water heater, install temperature and pressure
protective equipment required by local codes but no less than a combination temperature relief valve certied by a
nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials,
as meeting the requirements for Relief Valves and Automatic Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22latest edition. This valve must be marked with a maximum set pressure not to exceed the marked working pressure of
the water heater. Install the valve into an opening provide and marked for this purpose in the water heater, and orient it
or provide tubing so that any discharge from the valve will exit only within 6 inches above, or at any distance below, the
structural oor, and cannot contact any live electrical part. The discharge opening must not be blocked or reduced in size
under any circumstances.
The heat transfer medium must be water or other non-toxic uid having a toxicity rating or class of 1, as listed in clinical
Toxicology of Commercial Products, latest edition.
The pressure of the heat transfer medium must be limited to a maximum of 60 psig by an approved safety or relief valve.
2
DO NOT store or use gasoline or other ammable vapors or liquids in the vicinity of this or any other appliance.
If you smell gas vapors, DO NOT try to operate any appliance - DO NOT touch any electrical switch or use any phone in
the building. Immediately, call the gas supplier from a remote located phone. Follow the gas supplier’s instructions or if the
supplier is unavailable, contact the re department.
II. IMPORTANT SAFETY INSTRUCTIONS
WARNING – When using electrical appliances, basic safety precautions to reduce the risk of re, electric
shock, or injury to persons should be followed, including:
READ ALL INSTRUCTIONS BEFORE USING THIS BUFFER TANK.
1.
This tank must be grounded if any electrical control is used. Connect only to properly grounded outlet.
2.
Install or locate this buffer tank only in accordance with the provided installation instructions
3.
Use this tank only for its intended use as described in this manual.
4.
As with any appliance, close supervision is necessary when used by children.
5.
This tank should be serviced only by qualied personnel. Contact nearest authorized service facility for
examination, repair, or adjustment.
SAVE THESE INSTRUCTIONS
III. Application
The primary application of a buffer tank is to reduce heat pump, chiller, or boiler short cycling. Hydronic buffer tanks are
used in systems operating below the design load condition, which is most of the time, or in systems having several low
BTU cooling or heating loads calling at different times. This can cause the heat pump or the boiler to short cycle, resulting
in reduced operating efciency and shorter equipment life.
The hydronic buffer tanks are built with 4 connections. Two connections can be piped to the heat pump or boiler, and two
connections can be piped to the distribution system. If piped correctly, the tank can serve as both a thermal buffer and a
hydraulic separator. The heat pump or boiler can be hydraulically decoupled from the distribution system. The tanks are all
stainless steel construction with R-12 insulation, and an ABS jacket.
A 3/8” ID thermal well is located mid-tank. Thermistors to be inserted 3” into the well, or the well will accept the Honeywell L4006A controls.
WARNING:
Do not operate the water heaters in areas where the Ph is above 8.0 or below 6.0, and/or with chloride concentrations
greater than 100 parts per million (ppm). ECR’s standard warranty does not cover problems caused by improper water Ph
or excessive levels of chlorides.
3
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